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Reports attempts to inherit from Kotlin sealed interfaces or classes in Java code.
<p><b>Example:</b></p>
<pre><code>
// Kotlin file: MathExpression.kt

sealed class MathExpression

data class Const(val number: Double) : MathExpression()
data class Sum(val e1: MathExpression, val e2: MathExpression) : MathExpression()
</code></pre>
<pre><code>
// Java file: NotANumber.java

public class NotANumber extends MathExpression {
}
</code></pre>
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